CVE-2023-32731

When gRPC HTTP2 stack raised a header size exceeded error, it skipped parsing the rest of the HPACK frame. This caused any HPACK table mutations to also be skipped, resulting in a desynchronization of HPACK tables between sender and receiver. If leveraged, say, between a proxy and a backend, this could lead to requests from the proxy being interpreted as containing headers from different proxy clients - leading to an information leak that can be used for privilege escalation or data exfiltration. We recommend upgrading beyond the commit contained in https://github.com/grpc/grpc/pull/33005 https://github.com/grpc/grpc/pull/33005

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/grpc/grpc/pull/32309	Patch
https://github.com/grpc/grpc/pull/33005	Patch

Configurations

Configuration 1 (hide)

cpe:2.3:a:grpc:grpc:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2023-06-09 11:15

Updated : 2023-06-15 22:18

NVD link : CVE-2023-32731

Mitre link : CVE-2023-32731

CVE.ORG link : CVE-2023-32731

JSON object : View

Products Affected

grpc

grpc

CWE

NVD-CWE-Other CWE-440

Expected Behavior Violation

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